Copyholder



June 6, 1944.

(ENIMH!!!Hyggllllflglllll!! R. J. MILLER 2,350,365

COPYHOLDER 5 sheets-sheet 1 Filed Aug. l2., 1941 new l .mamans INVENTOR.Y En wvo/vo J /V/Lz. :e

Jurne 6, y1944. R. J. MILLER 21,350,365

' v coPYHoLDER I I Filed Aug. 12, 1941 5 Sheet's-Sheet 2 -HQ' 33a v I d332 .7H--

1 NV ENTOR.

June s, 1944.. R MILLER 2,350,365

COPYHOLDER i Filed Aug. 12, 1941 5 Sheets-Sheet 3 1N VENTOR.

Y Bya'rMo/vo ZM/z. fe

June 6, 1944. R. L M|| ER 2,350,365

COPYHOLDER Filed Aug. l2, 1941V 5 Sheets-Sheet 4 2/2 32 2/6 /24I 68 250/ze /fz U46 244 ,l /20 fl 2o 00]/ o I o l 202 58 /0 02| I .9a vos /5 INVENTOR.

Patented June 6, 1944 t COPYHOLDER Raymond J. Miller, Detroit, Mich.,assignor to American Pattern and Manufacturing Co., a copartnershipconsisting of said Miller and Alfred E. Wilson, Detroit, Mich.

Application August 12, 1941, Serial No. 406,527

25 Claims.

This invention relates to copyholders for supporting material to becopied and more particularly to a holder of the type wherein relativelymovable copy carrying and sighting members are movable relatively toeach other by novel and irnproved manually operable means.

Copyholders of the types heretofore developed have not been entirelysatisfactory for a number of reasons. For example, some of the more ob-`iectionable features are that the adjustments for controlling the linespacing movements of the relatively movable members are so complicatedthat they are used by only a few operators; the devices are not of suchcompact form that they can be stored in an operative position with atypewriter in the compartment of a desk; they cannot be collapsed to acompact form whereby they can be readily carried; one of the relativelymovable members does not disengage the copy before the copy is returnedto a rst line indicating position and therefore care must be eX- ercisedto avoid ruling the pages being copied; and it is diflicult to clamp thematerial being copied to the copy carrying member.

An object of this invention is therefore to provide a copyholder ofimproved and simplified design which may be readily used byinexperienced operators to accurately follow line spacings of varyingdimensions.

A further object of the invention is to provide a copyholder of compactand rugged design which may be readily stored in an operative positionwith a typewriter, and which may be collapsed to a compact inoperativeposition of generally rectangular shape whereby it may be readilycarried.

` Another object is to provide an improved actuating mechanism for acopy carrying member whereby substantially equal forces are applied atspaced points through improved motion transmitting means to actuateopposite sides of the copy carrying member in unison.

Yet a further object of the invention resides in the provision ofreadily accessible manually operable means for adjusting the movement ofthe copy carrying member to correspond with varying line spacings ofmaterial being copied, and separate manually operable control means topermit movement of the copy carrying member a single line space or aplurality of line spaces by actuation of a conveniently locatedoperating lever.

Still another object .is to provide interconnected oppositely extendingmotion transmitting means for supporting a vertically adjustablesighting bar in such a manner that in any vertically ad' sighting bar'remains horimembers in such a mannerth'at'the supporting members aremoved angularly relative to the copy carryingmember to space thesighting bar from the copy carrying member before vthe copy carryingmember is released to return toa first line position.

Yet a further object of theinvention is to pro# vide a copyholder havingspaced interconnected rigid motion transmitting means for elevating andlowering a copy carrying member relativeto a sighting bar.

Still another object isto provide a copyholder having nested telescopingvtubes forv supporting and controllingl the vertical position oi a copycarrying member, the tubes" being pivotally mounted on a supportingmember in such a manner that they maybe folded to a collapsed inf-moperative position to facilitate carrying the device.

Another object of the inventionresides in provision of an improvedcopyholder havingrelatively movable copy carrying and sighting memberscontrolled by novel interconnected motion transmitting means in such almanner1 that as the copy carrying member is returnedto a startingposition-the sighting and copy'carrying members move apart to avoidrullling of the material carried by the copy carrying member.

A further object of the invention is to provide positivelyactuatedspaced simultaneously controlled motion transmitting means foractuating spaced supporting' columns for a copy carrying member of acopyholder, n

Still another object is to provide an improved copyholder of simplieddesign which may be economically manufactured.

Other objects and advantages of this invention will be apparent from thefollowing detailed description -considered in connection with theaccompanying drawings, submitted for purposes of illustration only, andnot intendedV to define the scope of the invention, reference being hadfor that purpose to the subjoinedclaims.

'In the ldrawings wherein similar reference characters refer to similarparts throughout the several views:

Fig. 1 is a perspective view of the complete copyholder in the operativeposition.

Fig. 2 is a front elevation, partly in section, of a copyholder, takensubstantially on the line 2-2 of Fig. 3 looking in the direction of thearrows.

Fig. 3 is a side elevation, partly in section, taken substantially onthe line 8 3 of Fig. 2 looking in the direction of the arrows'.

Fig. 4 is also a side elevation, partly in section,

taken substantially on the line 4-4 of Fig. 2

looking in the direction of the arrows.

Fig. 5 is a sectional view, partly in elevation..

taken substantially on the line 5 5 of' Fig. 3', looking in thedirection of the arrows.

Fig. 6 is a .sectional view taken substantially' on the line 6--6 ofFig. 4, looking in the direction of the arrows.

Fig. 7 is a sectional view taken substantially'on the line I--'I of Fig.2, looking in the direction of the arrows.

Fig. 8is a sectional'view taken substantially on the line 8-8 of Fig. 5,looking in the direction of the arrows.v

Fig..9 is a sectional view taken substantially on ther line 9-9 of'Fig.2, looking downwardly in the direction of the arrows.

Fig. 10 isa top plan viewl taken substantially on the line I U'-I Il ofFig. 2.

Fig. 11 is a perspectivev view of the copyholder in the fully collapsedVand folded position.

Fig. 12 is a sectional view taken substantially on the line I2^I2 ofFig. 2, looking in the direction of the arrows and showing theY manuallyoperable means whereby the copy carrying member may be returned to a rstline indicating position.

Fig. 13 is a fragmentary sectional view of a portion of theinterconnected sighting bar-actuating mechanism.

Fig. 14 isa sectional View of an improved attaching bracket employed toclamp the copyholder to a table or desk;

Fig. 15 isa-rear elevational view of the attaching bracket takensubstantially on the line I5-I 5 of Fig. 14, looking in the direction ofthe arrows.

Before explaining in detail the present invention it i-s to beunderstood that theV invention is not limited in its application` to thedetails of construction and. arrangement-of parts illustrated. in theaccompanying drawings. since the invention is capable of otherembodiments and of being practiced or carried out in' various ways. Alsoitis to be understood. thatthe phraseology or terminology employedherein is for the purpose of description and not. of limitation. and itis not intended to limit the invention claimed herein beyondtherequirements of the prior art.

Referring. now to Fig. l, it will be observedV that the copyholdercomprises a copy holding member I0 detachably connected to spaced rightand left supporting elbows I2 and I4. The elbows I2 and I4 are carriedby laterally spaced groups of nested right and left telescoping tubes I6and I8 pivotally mounted in a generally rectangularly shaped housing 20.The vertical position of the copy carrying memberv Il) may be controlledby an actuating lever 22 projecting from the housing and operablyconnected to control the vertical movement of the groups of telescopingtubes I 6 and I8v by novel motion transmitting mechanism.

The lever 2-2 is hinged at 24 and is provided with a slide lockingmechanism 25 whereby it may be folded across the front of the housing2!)v as 75 illustrated in Fig. 11 wherein the copyholder is illustratedin the collapsed and folded position. The housing 20 has spacedsupporting feet 28 of suitable resilient material, and a rigidifying arm30 hingedly connected to the housing 20 by a hinge 32.

A backing shield 34 formed of any suitable material such for example asheavy fabric treated to prevent the now of light therethrough may beprovided to shield the space between the copy carrying member I0 and thehousing 20. 'Ihe shield 34 is provided with reinforced apertures toreceive spaced pins 3B carried by the copy carrying member II) rtooperably connect the shield to the copyv carrying member.

A preferably transparent sighting bar 38 having a reading line 39 iscarried by spaced right and left supporting members 40 and 42 projectingfrom the housing 20. The supporting members 40 and 42 are verticallyadjustable to position the sighting bar 38 at any desired verticalelevation above the housing 20 and to position it to engage or lieadjacent the material supported on the copy carrying member IU.

As illustrated infFig. 2, the groups of telescoping tubes IB and I3preferably include rotatable right and left external master tubes 44 and45 and internal tubes 48 and 50 held against rotation by the elbowsV I2and I4 respectively supporting the copy carrying member I 0. Theexternal tubes 44 and 46 each has an actuating pin 52 xed adjacent itsupper ends, and each of the internal tubes 48 and 50 has an actuatingpin 54 iixed adjacent itsv lower end.

Duplex actuating members having external and internal tubes 56 and 58respectively may be interposed between the external master tubes 44 and46 and the internal, tubes 48 and 50 of each group of tubes IS and I8respectively. Each of the external tubes 56 of each of the duplexmembers has a, helical groove 60 to receive the actuating pin 52 of eachof the external master tubes 44 and 46, and each internal tube 58 ofeach duplex member has av helical groove 62 to receive the actuating pin54 of each of the internal non-rotatable tubes 48 and 50.

The helical grooves 60. and 62 of the external and internal tubes 5S and58 respectively of each of the duplex actuating members are of equalpitch and are preferably staggered with reference to each other at oneend. If desired, the tubes 5B and 58 of the duplex members may carry theactuating pins, and the helical grooves may be formed in theexternalmaster tubes 44 and 46 and in the internal tubes 48 and 50. Itwill be apparent that, the duplex actuating members may be provided withone actuating pin and one helical groove positioned to cooperate withactuating pins and helical grooves associated with the internal andexternal tubes.

If greater lengthrof travel of the copy carrying member is required thancan be procured with single duplex actuating members, an additionalactuating tube having an actuating pin or a helical groove or one ormore duplex actuating members having actuating pins or helical `groovesmay be provided` Such additional actuating members may be positionedeither inside or outside of the illustrated tubes. It will also beapparent that if desired a single group of telescoping actuating membersmay be provided and the copy carrying member may be guided bytelescoping guide rods pivotally mounted in the housing 28.

Means may be provided to control the rotation ofthe rightandleftexternal master tubes 44 and 46 to cause them to rotate in unison tocontrolvthe vertical position of the copy carrying member l0. Onedesirable form of such control means comprises rightand left actuatingmembers 66( and 68 operably connected to the external master tubes 44and l46.

The actuating members 66 and 68 are carried by laterally spaced rightand left brackets 10 and i2 pivotally mounted by means of the pivots 'Hand-,i3 oni-laterally spaced supports 14 and 'I6 respectively carried bya backbone member 18 of the main frame 80 of the copyholder.

The right and left brackets I and 12 have upper and lower anges 82 and84 respectively in vwhich-the external master tubes 44 and 46 arerotatably journalled. Each of the right and left actuating members 66and 68 has a radially extending driving ange 86 and 88 adapted to beclamped to the right and left external master tubes 44'and 46respectively by means of axially extendingbushings 90 and threaded plugs92 (Fig.v

.Spaced right and left driving disks 94 and 96 areprovided to drive theflanges 36 and 88 respectively. The driving disks 94 and 96 are fixedto'right'and left sleeves 98 concentrically mounted on' axiallyextending bushings |00 interposed between the right and left handexternal tubes 44 and/45 and the lower flanges 84 of the right andleft'brackets 10 andIZ.

As illustrated in Figs. 4, 5, `'7 and 8, the surfaces of the right andleft hand driving disks 94 and 96 adjacent the respective drivingflanges 86v and 88 are contoured to provide V-shaped surfaces'betweenthe respective disks and flanges to receive aplurality of spaced rollers|02 to rotate the ilanges 86 and 88 and the master tubes 44 and '46 whenthe right and left disks 94 and 96eme rotated in one direction.

Yielding means such for example as a spring |04 ccncentrically mountedon each of'the right and'left master tubes 44 and 46 are interposedbetween each of the disks 94 and 96 and the lower anges 84 ofthe rightand left hand brackets 'l0-and 1.2. The springs |04 urge the disks 94and 96 towards a predetermined position wherein the pins |08 fixed inthe bushings |00 move in horizontally extending slots |09 aligned withan gularly inclined slots |08 formed in the sleeves 98. as illustratedin Fig. '7.

The rollers |02 are yieldingly urged towards a `driviuig position'inengagement with the right and left hand disks 94 and 96 and the flanges86 and '88 by springs ||0 projecting from the disks 94 and 96 andextending around the edges of sleeves 98 as illustrated in Fig. 8.

spaced right and left auxiliary driving disks ||2 and A| |4 are providedto hold the right and left-flanges 86 and 88 against backward rotationwhen the driving disks 94 and 96 are being returned to their normalposition under the influence of the springs |04 associated with theright and left master tubes 44 and 46 respectively.

The auxiliary disks 2 and ||4 are iixed to right and left sleeves ||6surrounding axially extending-bushings ||8 interposed between the upperflanges 62 of the right and left hand brackets I0 and '|2 and the mastertubes 44 and 4-6 (Fig. 5). Spaced rollers |20 interposed betweencontoured portions of the auxiliary disks H2 and ||4 and the right andleft hand flanges 86 and 88 produce a wedging force on the flanges 86and 88 to prevent them from rotating back wardly when the drivingdisks'94 and 96 are released.

Stop pins |22 carried by the right and left hand bushings ||8 projectinto angularly inclined slots |24 of the sleeves ||6 to limit rotationalmovement ofthe right and left hand auxiliary disks ||2 and ||4 in onedirection. Yielding means such for example as springs |26 concentricallymounted on the tubes 44 and 46 engage the auxiliary disks ||2- and ||4and the right and left hand Iianges 82 to yieldingly urge the auxiliarydisks towards a predetermined position with the pins |22 engaging thematerial dening the end of the slots |24 as illustrated in Fig. 7.

Means may be provided to simultaneously.

rotate the right and left driving disks 94 and 96A to actuate the rightand left hand driving anges 86 and 88 and tubes 44 and 46 to elevate thecopy |36 and |38 have stop members |40 positionedv to be engaged by thearms |32 and' |34 respectively upon predetermined rotation of the rod|30 to rotate the right and left driving disks' 94 and 96 in unison.

Means may be provided to release the driving and auxiliary disks topermit the right and left master tubes 44 and 46 to rotate in theopposite direction to lower the copy carrying member l0.

The links |36 and |38 operably connected to the right and left drivingdisks 94 and 96 are provided with releasing stop members |42 spaced fromthe actuating stop members |40 and positioned to be engaged by the arms|32 and |34 when the rod |30 is rotated in the opposite or clockwisedirection as viewed in Figs. 3 and 7.

The right and left auxiliary holding disks ||2 and |4 are connected withthe right and left hand arms |32 and |34 of the actuating rod |30 bylinks |44 and |46 projecting into the auxiliary disks ||2 and ||4. Thelinks |44 and |46 are provided with releasing stop members |48positioned to be engaged by the arms |32 and |34 when the actuating rod|30 is rotated in the clockwise directionas viewed in Fig. '7.

Backward` movement of the arms |32 and |84 by rotation of the actuatingrod |30 in the clockwise direction as viewed in Figs. 3 and 7 istransmitted through the releasing stop members to subject the links |38and |38 operably connected to the driving disks to tension and also tosubject the links |44 and |46 operably connected 'Y to the auxiliarydisks to tensio-n. The driving disks 94 and 96 are forced by the pins|06 car-` ried by the bushings |00 and sliding in the angularly inclinedslots |08 of the sleeves 98 to move axially of the bushings |00 againstthe resistance of the spring |04 to interrupt the driving connection ofthe rollers |02 with the right and leftY hand anges 86 and 88.

In a similar manner the links |44 and |46 cause auxiliary disks awayfrom the flanges 86 and 88 against the resistance of the spring |26 tointerrupt the driving connection of the rollers with the flanges 86 and88. v`

The actuating shaft is provided with a downwardly extending arm havingan enlarged aperture to receive a rod |52 fixed to the backbone member18 of the main frame 80. The rod |50 carries a plurality of spacedsprings |54 and |56 which exert a force onthe arm |50 to yieldingly urgethe actuating shaft |30 to return to a substantially predeterminedinoperative position.

Manually operable means may be provided to vary the extent of verticalmovement of the copy carrying member |0 by movement of the actuatinglever 22 to readily accommodate the device for use with copy materialhaving lines spaced at varying distances apart.

One desirable form of such control means comprises an adjustable stopmember (Figs. 2, 3 and 9) carried by an arm |6| pivotally mounted on abracket |62 by a rivet |64. The bracket |62 is provided with a pair ofspaced slots |66 adapted to receive spaced pins |68 carried by the endmember of the main frame 80. The bracket |62 carries a clamping screw|10 slidably mounted in a slot |12 of the main frame 80 whereby thebracket may be adjustably clamped to the frame to vary the distancebetween the stop member |60 and the actuating shaft |30.

If the bracket |62 is moved to position the stop member |60 farther fromthe actuating shaft |30, it will obstruct angular movement of theactuating lever 22 sooner than it will if it is spaced closer to theactuating shaft. The rotational movement of the actuating shaft |30controlling the vertical position of the copy carrying member |0 cantherefore readily be changed by varying the distance between the stopmember |60 and the actuating shaft |30 by movement of the bracket |62.

Means may be provided to indicate the extent of vertical movement of thecopy carrying member by predetermined movement of the actuating lever22. One desirable form of such indicating means comprises cooperatingscales |14 and |16 carried by the sighting bar 38 (Figs. 1 and 2) andthe end of the housing 20 respectively (Fig. l1)

The sighting bar 38 may be formed of transparent material or may have atransparent section to carry the scale |14. Y

The bracket |62 is provided with a lug |18 having a reference lineadapted to cooperate with the graduations of the scale |16 ofthe housing20 (Figs. 9 and 11) to indicate the vertical movement of the copy'carrying member I0 relative to the scale |14 on the sighting bar 38 uponactuation of the lever 22.

To adjust the stop member |60 to control the vertical movement of thecopy carrying member I0, the reading line 39 of the sighting bar 38 maybe aligned with the bottom of a line of type of material mounted on thecopy carrying member I0. One of the graduations of the scale |14 on thesighting bar 38 is aligned with the bottom cf the next line of type ofthe material to be copied (Figs. 1 and 2). This indicates the desiredposition of the reference line |80 of the bracket |62 relative to thegraduations of the scale |16 (Figs.

9 and 11) to permit movement of the copy carrying member |0 a Verticaldistance corresponding to the vertical distance between the lines of thematerial to be copied.

Assume for example that when. the reading line 30 of the sighting bar 38is' aligned with the bottom of one line of material to be copied, thebottom of the next line of material is in alignment with the horizontalline indicated by the numeral 3 of the scale |14. The bracket |62 shouldthen be positioned so that the reference line |80 of the lug |18 isaligned with the numeral 3 of the scale |16 carried by the housing 20 asillustrated in Fig. 11. The clamping screw |10 should then be tightenedto clamp the bracket 62 in a fixed position relative to the end memberof the main frame 80. The copy carrying member I0 will then be elevateda distance corresponding with the distance between lines of type or thedistance between the ruling linev 38 and the graduation indicated by thenumeral 3 of the scale |14 each time the lever 22 is actuated. Means maybe provided to permit vertical movement of the copy carrying member I0corresponding with single, double or triple spacing of the distanceindicated by the reference -line |80 relative to the graduations of thescale |16.

One illustrative form of suitable spacing control means comprisesauxiliary stop members |86 and |88 carried by the arm |6|. The arm |6|may be provided with a manually operable ac-Y tuating lever |90projecting through an aperture |92 in the front of the housing 20 asillustrated in Fig. 11.

Since the stop members |60, |86 and` |88 are carried by the arm |6|,their angular relation relative to the lever 22 remains constantregardless of the position of the bracket |62 relative to the actuatingshaft |30. The vertical distance between the stop members |60, |86 and|88 is such that in all positions of the bracket |62 the stop member |86will permit twice the vertical movement of the actuating lever 22 as thestop |60, and the stop member |88 will permit three times the movementof the actuating lever as the stop member |60.

The arm |6| can be moved angularly on the pin |64 to move all of thestop members |60, |06 and 88 out of alignment with the path of travel ofthe actuating lever 22 to permit unlimited vertical movement of the copycarrying member I0 by actuation of the lever 22.

The housing 20 adjacentthe aperture |92 may be provided with a scale |94to indicate the position of the lever |90 to selectively align one ofthe stops |60, |86 or |88 with the path of movement of the actuatinglever 22 to permit single, double or triple spacing. A referencecharacter is also provided to indicate the position of the lever |90when none of the stops are in the path of movement of the actuatinglever 22 to permit innite movement of the copyv carrying member I0.

Means may be provided to permit vertical adjustment cf the sighting bar38 to suit the convenience of different operators. v

The supporting members 40 and 42 for the sighting bar 38 are preferablyflexible, and are interconnected in such a manner as to maintain thesighting bar horizontal in anyvertical position to which it may bemoved.

As more clearly illustrated in Figs. 2, v9 and 13, the supportingmembers 40 and 42 are formed of closely wound coils of spring wireslidably mounted in parallel tubes 200 and 202 respectively. It will benoted that the tube 202 has a curved section 204 connecting with a tube206 extending parallel with the tube 200.

The supporting members 40 and 42 are interconnected by a bracket 208 asillustrated in Fig.

13. The side walls of the tubes 200 and 206 are cut away as illustratedat 209 in Fig. '1 whereby the bracket 208 may slide longitudinally ofthe tubes 200 and 206. This movement of the bracket 208 operates to feedthe supporting members 40 and 42 equally through the tubes 200 and 202."I'he tubes 200 and 202 are aligned with angularly vinclined directingnozzles 2|0 and 2|2 carried by brackets 2|4 and 2|6 respectively. The

tures 2i8 and 220 formed in the top of the housing 20.

The upper ends of the supporting members :40 and 42 are provided withangularly extending projections 222 and 224 respectively adapted toreceive spring clamping brackets 226 and 228.

yThe spring brackets 226- and 228 engage horizon- Itally extendingprojections 230 and 232 respectively carried by the sighting bar 38. Thespring vbrackets 226 and 228v yieldingly engage the projections 230'and232 of the sighting bar 38 to `yieldingly hold it in any desired angularposition relative to the material clamped to the copy carrying member|0.

The supporting members 40 and 42 may be telescoped into the tubes 200and 202 to extendtransversely within the housing 20 and per- Amit thesighting bar 38 to be lowered to a collapsed position to' lie on thetop'of the housing 20. Thespring brackets 226 and 228 permit 'thesighting bar 38 to 'rotate on the horizontally 'extending portions. ofthe projections 222 and Motion transmitting means may be provided toseparate the'sighting bar 38 from the material supported on the copycarrying member before the actuating members are released to permitlowering of the copy carrying member |0 to avoid ruiiiing of thematerial being copied.

One desirable form of such motion transmitting means is illustrated inFigs. 2, 7 and 9.` The actuating shaft |30 is provided with an arm 240adapted to receive a link 242. The link 242 has a contoured end portion244 of a radiusl corresponding with the length ofthe arm 240 whereby thearm 240 may move freely on the contoured portion of the link when theshaft |30 is actuated in the counterclockwise direction as viewed inFig. '1 to elevate the copy carrying member l0. The link 242 is providedwith a stop memj ber 246 positioned to be engaged bythe arm 240 toactuate the link 242 when the shaft |30 is rotated in the clockwisedirection as viewed in Fig. 'l to release the actuating members 66 and68.

The link 242 is operably connected to an arm 248 fixed to the tube 200in such a manner as to oscillate the tube 200 when the actuating shaft|30 is rotated to release the copy carrying member I0. Oscillation ofthe tube 200 is transmitted 'through the tubes 202 and 206 to move thedirecting nozzles 2 0 and 2 2 angularly in the counterclockwisedirection about the pivot points 2|5 and 2|1 of the brackets 2|4 and 2|6on the main frame member. Angular movement of the directmay be providedto yieldingly urge the supporting members -40 and 42 in the clockwisedirection as viewed in Figs. 3 and 7 to yieldingly maintain the sightingbar 38 in engage-ment with the material supported on the copy carryingvmember I0. The spring 250 also maintains the link 242 in the forwardposition illustrated in Fig. 7 wherein it does not interfere withcounterclockwise movement of the arm 240 and actuating shaft |30. Theaperture in the arm 240 which receives the contoured portion 244 of thelink 242 is'of sufficient size to prevent binding of the arm on the linkdue to angular displacement of the link 242 caused by material clampedto the copy carrying member I0.

The sighting bar actuating linkage is so proportioned that the sightingbar 38 is released from the copy material supported on the copy carryingmember |0 before the actuating mechanism controlling the verticalposition of the copy carrying member is released. The possibility ofruling the copy material supported onthe copy carrying member or causingbinding of material between the copy carrying member and the sightingbar is thus eliminated.

The shield 34 which as previously stated may be formed of any suitablematerial such as heavy fabric may be attached to a roll. 260. The roll260 is supported in brackets 262 and 264 carried by the main frame(Figs. 2 and 9). The roll-260 has an internal spring to exert a force towind the shield 34 on the roll, and to assist the force of gravityacting on the copy carrying member I0 and telescoping tubes to returnthe copy carrying member to the retracted position.

Means may be provided `to adjustably vary the retracted position of thecopy carrying member l0 to permit it to return to a rst line positionwhen the actuating mechanisms 66 and 60 are released.

One illustrative form of such control means comprises adjustable stops210 and 212 carried by the internal tubes 48 and 50 respectively (Figs.1 to 3). As more clearlyillustrated in Fig. 12,v the adjustable stopsare provided with a spring clip 214 mountedon a pin 216 in such a mannerthat parallel bars 218 may lie within spaced slots 2180 formed in theinner tubes y48 and'. lBy actuating manually operable'clips`282 theadjustable stops 210 and 212 may be moved to any-desired verticalposition on the tubes '48 .and 50. Each of the adjustable stops. 210 and212 isprovided with resilient bushings 284 positioned to engage theupper end of the duplex actuating members of the vtelescoping tubes |6and .|8. When the actuating lever 22 is manipulated to release theactuating members 66an`d 68 the stops 210 and 212 engage the duplexmembers to prevent the copy carrying member` |0 from moving downwardlybeyond a predetermined irst line indicating position.

The copy carrying member l0 is provided with a pair of oppositelyextending lugs 290 and 292 adapted to clampingly engage the elbows |2and ing nozzles 2| 0 and 2|2 moves the supporting :members 40 and 42angularly in the counterclockwise direction as viewed in Figs. 3 and '7to separate the sighting bar 38 from the material carried by the copycarrying member |0.

A spring Y250 interposed between the arm 248 I and the front member 2520f the main frame B0 |4 respectively. The copy carrying member I0 isalso provided with an upper rolled bead 286 forming horizontally`extending( tubes 298r adapted to receive the horizontally extendingportions ofthe elbow members I2 and |-4 whereby the copy carrying member|0 may be securely-mounted on the telescoping tube members |6 and I8respectively. y Y Y Means may be provided to permit clamping Yof copymaterial to the copy carrying member |0at a plurali-ty of spaced points.One desirable form of such clamping means includes a pair of spacedbails 3I6 and 3I2. The bail 3I6 is pivotally connected to the back ofthe copy carrying member I 6 by means lof brackets 3 I 4 and 3 I 6riveted thereto (Fig. 10) The bail 3I2 is pivotally mounted on the copycarrying member by means of brackets 3I8 and 326 respectively. Each ofthe bails 3I6 and 3I2 is provided with coiled springs 322 and 324respectively whereby the front portions ofthe bails are yieldingly urgedinto engagement with the face of the copy carrying member I6 toreleasably clamp material to be copied to the face of the member I6.Spaced actuating means 326 and 328 may be provided to permit separatemovement of the bails 3I 6 and 3 I 2 to selectively clamp material tothe face of the copy carrying member.

Auxiliary bails 336 and 332 (Figs. 1, 2 and 10) may be provided toengage material such for example as a stenographers notebook where thepages turn over longitudinally to lie adjacent the rear portion of thecopy carrying member I6. The bails 336 and 332 are carried by brackets334 and 336 respectively pivotally mounted on brackets 338 and 346riveted or otherwise suitably secured to the copy carrying member I6.Yielding means such for example as springs 342 and 344 may be providedto yieldingly urge the auxiliary bails 336 and 332 into engagement withthe material to be copied.

It will be noted that the :brackets 334 and 336 are pivotally mounted tothe brackets 338 and 346 in such a manner that the bails 336 and 332 maybe moved to any desired angular position relative to the copy carryingmember I6. Manually operable means 346 and 348 may be provided teactuate the bails 330 and 332.

Adjustable right and left clamping brackets 366 and 362 may be providedto clamp the copy carrying member to a table or desk. Referring to Fig.14, it will be observed that the clamps 366 and 362 have a horizontallyextending portion 364 having resilient pads 365"adapted to underlie asurface 366 to be engaged. The clamps 366 and 362 include staggeredvertically extending portions 368 and 316 positioned to lie outside andinside respectively of the housing 26. A manually operable handle 312 isprovided to move the bracket downwardly against the resistance of aspring 314 carried by a bracket 315 to move the horizontally extendingportion 364 and pad 365 into engaging position with the bottom of thesurface 366. The bracket 315 is pivoted to the housing 26 by means of arivet 311 whereby the bracket can move angularly relative to the housing26.

Referring to Fig. 15, it Will be observed that a pair of oppositelyextending slots 314 and 316 are provided in the housing 26 to permitmovement of the brackets 366 and 3'62 to an inoperative position asshown in dot and dash lines wherein the portion 364 of each clampingbracket lies within the space between the supporting feet 28 and thebottom of the housing 26.

The operation of this device -is as follows:

Assume that the copy holder is in the fully collapsed and foldedposition illustrated in Fig. 11, and that it is desired to actuate it.The rigidifying arm 30 hingedly mounted to the casing 26 is rotated onthe hinge to align it with the end of the casing 26 as illustrated inFig. 1. The copyholder is then positioned on whatever surface it isdesired to attach it to and the manually operable levers 312 areactuated to position the attaching clamps -in the position indicated infull lines in Fig. 15. The levers 312 are then depressed to position thehorizontal portions 364 and pads 365 to underlie the surface 366 towhich itis desired to clamp the copyholder.

The guide arms 29| and 283 engaging the lugs 266 and 262 and extendinginto the head 296 of the copy carrying member I6 are rotated outwardlyto release the copy carrying member.

The copy carrying member I6 may then be removed from the top of thehousing 20 and the telescoping tubes I6 and I8 pivoted about theirrespective angularly inclined pivot points 1I and 13 on the brackets 14and 16 to move them from the inoperative dotted line position of Fig. 10to the elevated operative position. The links v|36 and |44 provided toactuate the telescoping tubes I6, and the links |38 and |46 whichactua'te the tubes I3 are twisted relative to each other as more clearlyillustrated in Figs. 4, '7, 8 and 9. This twisting of the actuatinglinks permits them to open up or separate as the tubes are moved to thehorizontal or inoperative position illustrated in Fig.l 10 and to assumethe twisted operative position when the tubes are moved to the uprightor operative position. The horizontal portions of the elbow members I2and I4 carried by the telescoping tubes should then be projected intothe tubular portion 268 formed at the upper portion of the copy carryingmember I6 and the spring clips 286 and 292 of the copy carrying memberI6 moved into engaging position with the vertically extending portion ofthe elbow members I2 and I 5l. The shield 34 should then be partiallywith- 'drawn from the housing 26 and its reinforced apertures placedover the spaced pins 36 of the .copy carrying member to secure theshield to the movable copy carrying member I6.

The supporting members 46 and 42 should then be elevated to position thesighting bar 38 at whatever vertical position the particlular operatordesires to observe the material being copied. The interconnection of thesupporting members induces them to move vertically in unison therebymaintaining the sighting bar 38 horizontal in any elevated position towhich it may be moved. The sighting bar 38 may be rotated on the springclamps 226 and 228 to a vertical position in substantial alignment withthe copy carrying member I6 and shield 34.

The actuating bar 22 should then be pivoted about the hinge 24 from theposition illustrated in Fig. 11 to the position illustrated in Fig. l,and the locking mechanism 26 moved to lock the spaced portions of theactuating member 22 as illustrated in Figs. l and 3.

If sheet material is to be copied, the manually operable means 326 and328 (Fig. 10) may be actuated to pivot the spaced bails 3I6 and 3I2Aabout their respective brackets whereby the material to be copied maybe projected under the forward portions of the bails and yieldinglyengaged when the bails are released. It will be noted that the bails 3I6and 3I2 may be actuated separately whereby material to be copied may beclamped by one of the bails to permit adjustment of the materialrelative to the other bail. Greater exibility of control of the materialto be copied is thus provided.

IfV the material to be copied is in the form of an open-ended notebooksuch for example as a shorthand book, the cover or portion of thenotebook to be folded back is passed under the bail 3I6, and the book isheld by the bail 3I6. In order to prevent the flexible pages fromfalling back in front of the work being copied the bail 330 may berotated on its pivot/ed bracket 334 to ,engage the foldedA pages fromthe front and slightly above the bail 3|0 to yieldingly maintain themout of the line of vision with respect/to the material being copied. Thebails 338 and 332 `being'pivotedpermit of considerable flexibility incontrolling the position of various types of material' being' copied. Ifdesired, they may be used as separator or indexing markers in con-`nection with the material being copied.

vIf the material to be copied is in the form of 'an open-ended notebookwhich is too large to be engaged by the bail 3|0, the actuating members346 and 348 may be manually moved downwardly to elevate the bails 33|)and 332 vand the notebook in the open position may be laid over the topof the copy carrying member I8. The t bails 330`and 332 may then bereleased to yieldingly engage the notebook or other material to becopied to prevent displacement thereof.

The adjustable stop members 218 and 2`|2v should be adjusted on theright and left tubes 48 and 50 to position the copy carrying member I0 vat a desired elevation or 'lrst line indicating posiftion relative tothesighting bar 38.

"elevated by partial strokes of the actuating member'22 to position thereading line 38 of the 'sighting bar 38 adjacent the bottom of one ofthe'linesof material to be copied. The horizontal lines of the scale |74carried by the transparent sight bar. A38 should be observed todetervmine which of the horizontal lines of the scale lies adjacent thebottom of the next line to be copied and the numeral opposite such linenoted; The clamping nut Ill] (Figs. 3 and 1l) shouldY then be loosenedand the bracket |62 moved foriwardly or backwardly relatively to the endof the housing 28 to'align the reference line |80 oi the lug |18 withthe numeral of the scale |76 corresponding with the numeral referred toabove of the scale |74. The clamping screw nut |70 should thenv be.tightened to clamp the bracket |62 to `the end member of the frame 80.

If single spaced' lines of the material to be.v H,copied are desired,the manually operable mem- If double.

, The copy carrying member |0 may then be in alignment with theactuating member |22. If unlimited movement of the copy .carrying memberis desired, the arm |6| is rotated on the pivot |64 to the extreme righthand position to vmove all of the stops out of alignment with theactuating member 22. Downward movement of the actuating member 22oscillates the actuating shaft |30 from the neutral position illustratedin Figs. 8, 4 and '7. The shaft |30 is operably connected by means ofthe arms |32 and |34 and links |36 and |38 with the actuating disks 84and 86. Oscillationof the shaft |30 in the counterclockwise direction asviewed in Figs. 3, 4 and 7 rotates the right and left actuating disks 94and 96 in the clockwise direction as viewed in Fig. 8.

lMovement of the actuating disks 94 and 96 is transmitted through thespaced rollers |02 to rotate the ilanges 86 and 88 Xed tothe outermaster tubes 44L and 46A respectively. Rotation of the tubes 44 and 46is transmitted through the duplex actuating member and actuating pins 54to elevate the internal tubes 48 and 50 and the copy carrying member I0.When the actuating lever is released, the springs |04 and |54 return theactuating disks 94. and 96 and the actuating shaft |30 and the lever 22to their inoperative positions.

When the actuating disks 94 and 98 release the anges 86 and 88 to returnto their inoperative positions, the auxiliary disks ||2 and ||4yieldingly, urged by their springs |26, position vtheir spaced rollers|20 inengagement with the l Aiianges 86 and 88 to prevent backwardrotation of the flanges and the master tubes 44 and 46.

h When the external master tubes 44 and 46 have thus been actuated asuicient number of times to elevate the internal tubes 48 and 5 0 thefull length of the` internal tubes 58, the actuating pin 52 carriedbythe external tubes 44 and 46 engaging the helical slot of the tubes 56of the duplex actuating members-elevate the tubes 56 and158 `to furtherelevate the copy carrying clockwise direction as viewed in Figs. 3, 4and '7.

This movement'of the actuating shaft |30 is transmitted 'through thestopmembers |42 of the 'links |36l and |38 operablyconnected to the"actuatingdi-sks 94 and 96, and through the stop members |48 carried bythe links |44 and |46 operably connected to the auxiliary disks ||2 vand||4.j This movement of the -actuatingand auxiliary disksrotates them inthe counterclockwise direction as viewed -in Figs. 8 and 9. Re-

ferring to Figs. 5 and 7, it will be noted that the pins |138 `and |22carriedby the bushings y|00 and ||8 slidewithin the slots |08 and .|24

j of the sleeves 98 ,and I6 to separate the actuating and auxiliarydisks from the lactuating flanges 86 and 88 respectively.

.The Aforce of gravity acting on the copy carrying memberl and theelevated tubes, together with the weight of the material being copiedand the force exerted by the spring in the roll 268 carrying the shield34,.moves the telescoping tubes toward the collapsed position therebyreturning the copy carrying member to the first line indicatingposition. When the lever f22 is 'released'the spring |56 returns theshaft |30 to the neutral o r inoperative position.

, As the actuating, lever 22.is elevated to release the copycarry'ingmember to permit it to move to fthelretractedposition, the link 242actuatedby the` arm 240 oscillates the arm 248 fixed to the tubfe'1`200in the 'counterclockwise direction as viewed in Fig. 7. Oscillation ofthe tube 200 operatesthrough theassociated tubes 202 and 206 topivot thedirecting nozzles 2|0 and 2| 2 car- `movable member comprising rotatabletelescopin'g tubes, and motion transmitting means for rotating thetelescoping tubes. l

2. In a copyholder, a sighting bar, a copy car- 'rying'memben motiontransmitting means comprising nested rotatable telescoping tubes forsupporting and moving the copy carrying member relative to the sightingbar, and manually operable means for rotating the rotatable tubes.

43. A' copyholder comprising a generally hori- `zontally extendingsighting bar, a copy carrying member movable vertically relative to thesighting bar, transversely spaced groups of telescoping tubes supportingthe copy carrying member, and motion transmitting means for actuatingsaid groups of telescoping tubes in unison to move the copy carryingmember.

4. A copyholder comprising a copy carrying member movable verticallyfrom ya retracted .po-

sition, means to elevate the copy carrying member comprisingtransversely spaced groups of nested telescoping tubes includingrotatable and non-rotatable tubes operably connected to the copycarrying member, cooperating motion transmitting means between saidtubes operable by rotative movement of the rotatable tubes, meansincluding rotatable radially extending flanges to actuate the rotatabletubes, an actuating shaft rotatable in opposite directions from aneutral position, means engaging said anges and operable by rotation of'the shalt in one direction from the neutral position to rotate saidflanges in unison to elevate the copy carrying member, means engagingsaid flanges and operable upon release of said shaft to hold the copycarrying member against downward movement, and means operable uponreverse rotation of said shaft from the neutral position to release theflanges to enable the copy carrying member to return to the retractedposition.

5. In a copyholder, a support, a copy carrying member, motiontransmitting means comprising telescoping rotatable and non-rotatabletubes interposed between the support and the copy carrying memberwhereby the copy carrying member may be moved vertically from aretracted position relative to the support upon rotation of a rotatabletube, a flange operably connected to said rotatable tube, an actuatingshaft rotatable in opposite directions from a neutral position,actuating and holding disks spaced on opposite sides of the flange,driving means between said disks and the ange, yielding means urging thedisks towards the flange, connecting means between the .actuating diskand shaft to rotate the flange and the rotatable tube upon rotation ofthe shaft in one direction from the neutral 'position to move the copycarrying member vertically 'relative to "the support, and connectingmeans `between said act-uating and holding disks and the shaft to movesaid disks axially in opposite directions rel- 'ative to the ilange uponreverse rotation `of the shaft from the neutral position Ito release theilange to enable the rotatable tube to `rotate lin the oppositedirection to return the copy carrying member to the retracted position.

6. In a copyholder, a housing, a sighting bar,

transversely spaced vertically adjustable interconnected exible membersprojecting from 'the housing for supporting the sighting barsubstantially horizontally in any vertical position to which it is movedrelative to the housing.

n 7. In a copyholder, a housing, a sighting bar, a pair of verticallymovable spaced exible supports for the sighting bar, and motiontransmitting means interconnecting said supports to induce the sightingbar to maintain a substantially horizontal position regardless of itsvertical elevation relative to the housing.

8. In a copyholder, a housing, a sighting bar, means to support thesighting bar above the housing comprising spaced flexible supportsprojecting from the housing, guiding means for the flexible supportsextending longitudinally in the housing, and means associated with theguiding means and interconnecting the flexible supports to induce theIlexible supports to move in unison relative to the housing to maintainthe sighting bar substantially horizontal in any vertical position towhich it is moved relative to the housing.

9. In a copyholder, a vertically movable copy carrying member, asighting bar positioned to lie adjacent the copy carrying member, motiontransmitting means to elevate the copy carrying member relative to thesighting bar and to release it to return to a retracted positionrelative to the sighting bar, and connecting means between said motiontransmitting means and sighting bar to space the sighting bar from thecopy carrying member when the copy carrying member is released to returnto said retracted position.

10. A copyholder comprising a housing, a copy carrying member movablevertically relative to the housing, motion transmitting meanscontrolling the vertical movement of the copy carrying member inopposite directions, a sighting bar, means to support the sighting baradjacent the copy carrying member, and connecting means between saidmotion transmitting means and the supporting means for the sighting barto separate the sighting bar from the copy carrying member when themotion transmitting 'means 'is actuatedto permit a 'lowering ofthe copycarrying lmember relative to the housing.

11. A copyholder comprising a housing having 'a -frame, a verticallymovable copy carrying member, motion transmitting means tointermittently elevate the copy carrying member relative to the housingand to release it to `4return 'to a retracted position, a sightingbar,means lto support the sighting bar adjacent the copy carrying membercomprising spaced supportspivotally mounted on the frame and projectingfrom the housing, and connecting means "beltween'tlie Vpivotal supportsand said lmotion transmitting means to move the supports angularly tospace the sighting bar from vthe copy carrying member when the motiontransmitting means is actuated to release the copy carrying member toreturn to said retracted position.

12. A copyholder comprising a vertically movablefcopy carrying member,motion transmitting -elevation of the copycarryinglmember.

13, A copyholder 'having 'a frame member. na

copy carrying member, means for intermittently elevating thecopy-carrying member relative to theframe member a line space at a time,motion transmittingmeans comprising a shaft for actuating said elevatingmeans, an actuating lever operably connected to the shaft, a bracketadjustably lmountedv on the frame and movable towards and away from theshaft, stop means including an arm pivotally mounted on the bracket, aplurality of substantially equally spaced stop members carried by thearm and selectively movable into alignment with the actuating lever,manually operable means controlling the position of the bracket on theframe to vary the distance between the stop means 'and the shaft to varythe intermittent movement of the copy carrying member upon actuation ofthe actuating lever to correspond with variously spaced lines, andmanually operable means controlling the angular movement of said arm tosuccessively align different of said stop members with the actuatinglever to vary the intermittent movement of the copy carrying member uponactuation of said lever to provide movement of the copy carrying membercorresponding with'single, doubleV or triple spacing of lines.

14. In a copyholder, a copy carrying member, a generally horizontallyextending sighting bar having a transparent portion including a readingline and vertically spaced graduations to indicate the Vertical spacingof lines of material supported on the copy carrying member, motiontransmitting means including a manually operable lever and a rotatablemember to intermittently move the copy carrying member verticallyrelative to the sighting bar, manually adjustable stop means movablerelative to said rotatable member to vary the vertical movement of thecopy carrying member upon actuation of the manually operable lever, andspaced graduations associated with the adjustable stop means andcooperating with the spaced graduations on the sighting bar to indicatethe extent of vertical movement of the copy carrying member relative eto the sighting bar.

15. A copyholder comprising a copy carrying member, means includingtelescoping tubes for supporting and intermittently elevating the copyholding member, motion transmitting means for releasing the copy holdingmember for return movement, and manually operable adjustable stop meansassociated with the telescoping tubes to arrest downward movement of thecopy carrying member at a first line indicating position.

16. In a copyholder, a vertically movable copy carrying member, motiontransmitting means for intermittently elevating the copy holding member,means for releasing the copy holding member for return movement, asighting bar, means to support the sighting bar adjacent the copycarrying member, connecting means between the releasing means for thecopy carrying member and the supporting means for the sighting bar tomove the sighting bar away from the copy carrying member when saidreleasing means is actuated, and manually operable adjustable stop meansassociated with said motion transmitting means to arrest return movementof the copy carrying member at a rst line indicating position relativeto the sighting bar.

17. A collapsible copyholder comprising a frame, a housing carried bythe frame, a copy carrying member, spaced columns supporting the copycarrying member, hinge connecting means between the frame and saidspaced columns whereby the columns may be folded from la substantiallyvertical operative position to a substantially horizontal inoperativeposition within the housing, a sighting bar, and spaced supports for thesighting bar comprising exible shafts movable from substantiallyvertical operative positions' to substantially horizontal inoperativepositions within the housing.

18. A copyholder comprising a frame, a copy carrying member, spacedsupports `for the copy carrying member, detachable connecting meansbetween the copy carrying member andthe supports, angularly inclinedhinge connecting means between the supports and frame whereby thesupports may pivot about the hinge connections to a collapsedinoperative position, a sighting bar, spaced supports for'the sightingbar operably connected to the frame, and means associated with thesighting bar supports and frame whereby said supports may occupyv aninoperative collapsed position. Y

19. A copyholder comprising' members' movable vertically relative toeach other, telescoping tubes supporting one of said members, motiontransmitting means including relativelymovable actuating -and'holdingdisks toV move one of rsaid members vertically relative to the other,and a lever movable in opposite directions for controlling said disks, e

20. In a copyholder, a sighting bar, a copy carrying member, meanscontrolling vertical movement of the copy carrying member in oppositedirections relative to the sighting bar, and means responsive todownward movement of the copy carrying member to space the sighting barfrom the copy carrying member,

21. A copyholder comprising a sighting bar, a

`copy carrying member movable relative to the sighting bar, motiontransmitting means to elevate the copy carrying member relative to thesighting bar, means to release the copy carrying member to movedownwardly relative to the sighting bar, and means operable uponactuation of the last named means to space the sighting bar from thecopy carrying member.

22. A collapsible copyholder comprising a housing, a copy-carryingmember, spaced supports for the copy-carrying member, hinged connectingmeans between the supports and the housing whereby the supports may bemoved between upright operative and collapsed inoperative positions,detachable connecting means between the copy-carrying member and thespaced supports, a flexible light shield interposed between thecopy-carrying member and the housing, detachable connecting meansbetween the light shield and the copy-carrying member, a reel for thelight shield rotatably mounted in the housing, a sighting bar, andconnecting means between the sighting bar and the housing whereby thesighting bar may be adjusted vertically relative to the housing and mayoccupy an inoperative collapsed position relative to the housing.

23. In a copyholder, a frame, relatively-movable copy-carrying andsighting bar members, motion-transmitting means to intermittently moveone of said members relative to the other, an angularly movable leverfor actuating the motion-transmitting means, stop-carrying meanscomprising a bracket associated with the frame and movablelongitudinally of the lever to vary the angular movement of the lever tochange the movement of one of said members relative to the other tocorrespond with the vertical spacing between lines of copy materialcarried by the copycarrying member, ele-mp.lr.l .ff means; tof: lockelthe; bracket aealrrstzmovement:,lengltuelinalbf relwtivef'co-theeleveri, and;:means-.pvate1lyfmounedznrn the: brelelieranflheving: a: plurality-of selectively-owereblefstopfseemens adapted tebezseleetiyelylfper Slterledrlnlhe. nath of*movement-01meangulere.lsf-movable aetutng; leverv to; permit.: moylrxgzthe; movable member azdistance; cerrespendpg: with: the.: speci-ngz' between: ell-:plurality:of lines ef; the copy-materiel.

2f1;.. Irl- 21;. Copy-helder: hav-ine; reletelxmovable; Copy-carryingend;;s ehtingrb.arn members, arf seele keying vertically-spacedgreduetie. calmed-1w the;Slghtngrbarfmember-to: infllceiaesthevertical-i spacing.betweendinee.oifcopy material1centri.efhbyf` the;Copy-carrying: member; el: framef. motion?` transmittingrmeens tointermittentl 0f seid@members-relative-fto:theeothe anfengularly-movablea lever for: actuating: the@ rrllotioneA transmitting'means, stopfcarryjngzmeans.` comfM Y tions ande pointer) associated.;with; the'framef ande bracket-'f to indicate the; extent ofmovemenbI0f?mesonsaisi;members:relative1:0-rizheothem.thet grwduatiensf of.cheflalstrnaunedscale-I corresponds inleg.withxthewerticallyspacedegraduations zothel Sealer carrledfby thesightingebar,and;c1amping. memset@lleeksthefbracketagainst;movement.1ongli:ucliaxralllyjz relfadziveto r thee actuatinglever;

2.5..Im af conxholden having@v relatively, movable`cogmrcrryingandfsighting;barmembersg ausca-levheyi-ngg-vertica11ly-spaced: graduationse carried, by@` the;Sightinggbar member@ to: ind-Vicatemhefverticale speeingf.; between.lines oiA copy, materiali carried'. byythelcopyeeanylnggmember;a..frame,mo.tionf transnntting-.gf meamsfy to .intermittently move. onerr; ofisadimembexjsfrelativetoftheother; stopfmeemnsv

